Blowing-engine and the like.



C. N; SCOTT. -B LOW|NG ENGINE AND THE LIKE.

APPLICATION FILED JUNE 25 I910.

Patented Aug. 17, 1915.

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APPLICATION FILED JUNE 25, I910.

1,150,069. Patented Aug. 17, 1915.

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LoWI Ne-nNGINE Annann IIIKE.

' Specification of Letters ratem. te t 1a, 1915 Applicationfiledlune 25,1310. Serial No. 5%,782.

T0 (ZZZ whom it may] concern:

Be it'known that I, CLARENCE N. Sco'rtr, a subject of the King ofEngland, residingat Buifal county of Erie, andState ofjNeW' York, haveinvented certain new and useful Improvements in. Blowing-Engines and thelike, fully described and represented in the following specification andthe accompanying drawings, forming a partof the same.v

This invention relates to an improved blowing engine or pump of thattypein which the piston moves on a hollow trunk extending through the.cylinder, theespe'cial object of the invention being to provide ablowingengine of this type which shall be more compact, and simpler andstronger in construction than those heretofore designed.

The invention is intended especially for large blowing engines, but may,be used in other similar air or gas pumpsor compressors in which largecapacity isrequire'd.

hereafter and In accordance with my invention, thechollow trunk 18 usedfor admission, and thedisc'harge is at the ends of the cylinder, theadmission of air from the trunk to the cylinder being controlled bymechanically operated-valves, and the discharge preferably by automaticor pressure operated valves. The use of the longitudinally movingcylinder or ring valves for controlling the admission ports and of anadmission chamber outside the cylinder is thus avoided and important,results in compactness, simplicity of construction, strength and reducedweight of parts thus secured. V r

The invention includes, in addition to the above general features,certain detail combinations of parts, all as fully describedparticularly pointed out in the claims. 7 Y In the accompanying drawingsforming a part of this specification, there is shown a blowing engine ofthe preferred formembodying the invention, in which drawings Figure 1 isa side elevation of the blowing cylinder and part of the drivingmechanism.- Fig. 2 is a cross section on the line 2 of Figs. 1 and 3.Fig. 3 is a longitudinal central section of the blowing cylinder.

Referring to said drawings, A, B are the inboard and outboard heads ofthe engine,

C the cylinder body connecting the heads, D the piston, E the centraltrunk, F the air admission pipe connecting with the outer end of thetrunk, and G the discharge pipes from the discharge chambers in heads A,B,

shownas combining outside the engine into th e-single blast pipe. Itwill be understood,

however, that any suitable delivery connecting'with the [dischargechamber's m'ay be The trunk E has the two seriesof annular admissionportslO opening to the "cy1inder, and thesfe ports areic'ontr'olled byvalves 11 carried by valve rod 12, these valves being hollow to permitthe air topass through the n ft-orthe inboard endof thetrunk. Thecylinder-is provided at its ends with dis charge openings'controlled, byautomatic or pressure operated valves 13, which may be of any common orsuitable form, and

through which the air is delivered from the cylinder to dischargechambers 14;. The dis charge openings and valves "are preferably inthe-heads A,B, as shown but maybe in the cylinder wall at the ends ofthe cylinder."

The cylinder C ispreferably made in two longitudinal smiths-:15, 16,415use-a1 in such large engines, but an important feature of the cylindershown, by which convenient access to the plston and plston rlngs 1ssecured without disturbing any parts of the engine except half thecylinder, consists in the division of the outboard end 16 of thecylinder into sections circumferentially of the cylinder, this end ofthe cylinder being shown as formed in halves secured together by flangesand bolts 1, and the engine is preferably supported independently ofthis end of the cylinder, so that free access to the piston and pistonrings is afforded by simply unbolting these two halves of section 16 andremoving them. i a I j The piston D and valves 11 may be operated by anysuitable means. As shown, the piston D is driven by rods 17 at oppositesides of the piston passing through the inboard head and connected tocross head l8 on the main piston rod of the motor engine. The valve rod12 carries cross head 19 connected by lever 20 and link 21 to crank 22on the main crank pin driven by crank rod 28 from the cross head 18.

It will be seen that the construction is very compact as compared withprevious blowing engines, this compactness of structure reducing largelythe size and weight of parts. Great strength is (secured, also, as

the heads are connected and tied together by the stationary cylinder ofapproximately the full diameter of the heads. The trunk need not berelied upon for tying theheads together, as this result is eflicientlysecured by the stationary cylinder, so that'the trunk may be lighterthan when relied on to connect the heads. The large trunk required forfree admission of a large quantity of air reduces the depth of thepiston and affords a large bearing surface forit so that a simpler formof piston may be'used on account of its large bearing surface andreduced weight The mechanism for reciprocating :the admission valves issimpler, lighter andmore compact. than with the movable cylinder or ringvalves.

o It will be understood that the invention is not limited to the exactform or arrange ment of the parts shown, but that modifications may bemade therein without departing from theinvention as defined by'theclaims. 1

WhatI claim is: Y v I 1. A blowing engine or pump having a stationarycylinder and a stationary hollow trunk extending through the piston andhaving cylinder inlet ports through the trunk, mechanically actuatedinlet valves controlling said inlet ports, and discharge ports andvalves at the ends of the cylinder.

=2. A. blowing engine or pump having a 1 stationary cylinder and astationary hollow trunk extending through the piston and Copies ofthis-patent may be obtained for erated discharge valves at the ends ofthe cylinder. t a

at. Ina blowing engine or pump, the com bination with cylinder headsforming discharge chambers, a stationary cylinder con-- necting saidheads, and the piston, of a hol- 1 low trunk'extending through thecylinder and piston and open for admission at one end havin 0 linderinlet JOItS throu h the trunk, mechanically actuated inlet valves movingin the trunk and permitting the passage of air through them from theinlet end of the trunk, and discharge ports and valves at the 'ends' ofthe cylinder.

In'testimony whereof, I have hereunto set my hand, in the presence oftwo subscribing witnesses.

' CLARENCE N. sooT'r.

Witnesses R. WINTZER, I T. T. BRYEN.

five cents each, by addressing the Commissioner of Patents Washington,D. G.

